“This can increase the risk of palpitations, elevated blood pressure, abnormal heart rhythms, and, in susceptible individuals, more serious cardiac events. Tea and coffee are generally better studied, more predictable in composition, and less likely to contain multiple stimulant compounds in a single serving,” he said.
Article source: https://www.huffingtonpost.co.uk/entry/age-to-quit-energy-drinks_uk_69eb6242e4b0f3a433ca1ae3